Dust shield for warm air registers



June 20, 1933. R. c. BENDER DUST SHIELD FOR WARM AIR REGISTERS Filed Nov. 14, 1929 Y 4 www ...u

REGISTER.

ATTORNEY Patented ,lune 20, 1933 ROBERT C. BENDER, OF DAVENPORT, "IOWA DUST SSI-HELD F03` WARE/I AIR REGISTERS rlhe present invention pertains to improvements in dust shields for warm air registers andmore especially to improvev*ments in the type of devices shown in my va.-

5 rious patents and pending applications and has to do more especially with structures such as shown on sheet 4 oithe drawing of my application Serial No. 355,330 filed April i5, i929.

l0 Among the objects of this invention to provide an improved inode o f securing such a dust shield in place in proximity to an air register; to provide an improved dust collecting means in such structure; to pro- *5 vide improved means for forming adust proof joint between the shield and wall; to provide an improved mode of constructing such a shield for use with licor registers; and such further objects, advantages and capabilities as will hereafter appear and as are inherent in the construction disclosed lierein. My invention further resides in the combination, construction and arrangement of parts illustrated in the accompanying dra-wing and, while I have shown therein what is now considered to be the preferred embodiment of this invention, l desire the same to be understood as Yillustrative only and not to be construed in a` limiting sense.

ln the drawing annexed hereto and forniing a part hereof, Fig. l shows a plan view of the metallic supporting member for the dust ilter; Fig. 2 is a section substantially along the plane indicated by the broken line 2N2, Fig. 3; Fig. 8 is a vertical transverse section tal-zen between the ends of `the constriiiction shown in Figs. l and 2; Fig. Ll is an eno elevation of my invention as used in the malring of a dust shield for a floor register; Fig. 5 is a transverse section thibugli the dust mat or iilter shown in Fig. Fig. 6 is a broken plan view of the dust iii-at shown in Fig. 5; Fig. 7 is a transverse section ci a split rubber tube used as a. binding along part of the edges of the dust shield; Fig. 8 is an enlarged view of an en d of the holding means by which the device is held to a register; Fig. 9 is a perspective view of a member used in the making of the construction illustrated in Fig. 1l.

Reference will now be made in greater detail to the annexed drawing in which a wall register is denoted by the numeral l and a floor register by the numeral 2. This con- I struction will first be described as applied to t? a wall register and then in its application to a floor register. A sheet metal member 3, provided with numerous perforations 4 is bent as indicated at 5 and has an outer longitudinal edge turned back as at 6 to form a 6" smooth finish along the edge and to form a holding means for the dust pad or filter. A pair of generally triangular shaped ends or wings I are secured to the downwardly extending langes 8 at the ends ot the plate 3. Thesel ends 'T are preferably spot welded to the flanges 8 and are therefore practically integral with the plate 3. A rod 9 passes through perforations in the end plates 7 and is secured therein in any suitable way. A coiled spring l0 is provided with hooks l1 at its two ends and one of these is hooked to the register l so that the spring may serve asresilient means to draw the dust shield against the wall. This spring is then wrapped several times around the rod 9 and its other hook ll is also -fastened to the register. It will therefore be seen that the device may be pulled away from the wall far enough to permit it to be turned over so that its interior is directed outwardly. It will then` be possible to remove the dust pad from the securing means 6 and l2. The dust pads can then be taken to any convenient place to have the dust shaken out. A flexible rubber tube 13 is slitted along one side as indicated at 14 and is then mounted on the edge of the plate 3 and the back edges of the end plates F Therefore, the rubber will form a resilient Cil l. pad between the dust shield and the wall and will also serve the purpose of sealing this joint against the passage or" dust between the shield and wall. v

The construction oi' the dust iilter or pad 95 will now be described with particular rer"- erence to Figs. 5 and 6in which metal wool, preferably'steel wool, is shown as being cut into the form of a pad 14. Attached to one side of ythis pad is a strip of wire netting,

preferably copper or bronze which may have its opposite edges folded over as indicated at 16 and engaging the edges of the pad. The primary purpose of folding over these edges of the netting is to form a smooth edge along each of the two opposite sides of this member' so that there will be less danger of having ones hands injured when handling the dust pad. It may or may not be considered desirable to have the edges of the netting binding the edges of the metal wool and I therefore wish to cover both forms of construction as coming within the scope of this invention. In order to prevent the separation of the netting and the Wool, I pass a number of securing means 17 through both of these as indicated in Fig. 5. These securing means may be in the nature of wire staples as illustrated or other means may be used. However, I consider the Wire staples as preferable because of their simplicity and the ease of applying them for their intended purpose. When inserting the pad on the under side of the member 3, one of its edges may be put within one or the other of the holding means .6 and 12 and then the ad may be bent sufficiently `to permit the other edge to be slid into the other holding means. s y In Vthe making of thenstructure shown in Fig. 4, a plurality of units such as shown in Figs. 1, 2 and 3, Without the rubber Y18 applied theretotare joinedto a member 18 such as shown inY Fig. 9. This member may be rovided with an desired number of perorations 19 for t Ie passage of heated air therethrough. A pair of legs 20 are connected to yopposite ends of the member 18 byusuitable bolts 21 as shown in Fig. 4. The `U-"shaped member 18 ispreferably securedgto the plates 3 by spot welding or in some other suitable manner. The size of this dust vfilter can be varied by varying the with Vof the strip 18. Thus, if the register is unusually large, a wide strip 18 will servethe `purpose of extending the dust filter in Width so as to cover a register having a greater width. The dust pads for use in this construction are made of a width to extend from one extreme edge to the other instead of from the holding Lmeans 6 to the holding means 12 as shown in Fig. 3.

An obvious modiication of the construction described is to have the Wings 7 formed integrally with the body 3 instead of separately and secured thereto. n

It will be seen from the foregoing description, taken in conjunction with the attached drawing that I have provided a construction which will accomplish the objects set forth above.

It is of course understood that the specific description of structure set forth abovemay be departed from without departing from the spirit of my invention as set forth in this specification and the appended claims.

Having now described my invention, I claim:

1. In a register shield, a perforated sheet metal member for supporting a dust pad, a

dust pad attached thereto, a pair of roughly y' triangular plates secured to the ends of said perforated member and adapted to support the'same above and in front of a register, a rod extending between said end plates and secured thereto, and resilient means attached f ,side and attached over the rear edge of the supporting plate and wings.

3. A dust shield for the purpose indicated comprising a perforatedmetal plate carrying means on its under side for supporting a dust catching pad, a pad attached to said plate, wing plates secured to the ends of said first mentioned plate and having their back edges in substantiallythe same plane as the back edge of the iirst mentioned plate, and

`a resilient tubular member having a slot along one side, the same being applied to the rear edges of said plates to form a resilient cushion between the plates and the wall adjacent a register.

4. A dust shield for use in connection with a. Warm air register, said shield including a dust pad and having wing plates at its ends and a bar connecting said wing plates, and resilient means connecting the bar to the register to hold the dust shield in position adjacent the register.

5. A structure as deined by claim 2 having in combination therewith resilient means for attaching the shield to a register.

6. A structure as defined by claim L1 in which the resilient means comprises a coil spring wrapped around the bar and having its ends secured to the register.

7. yA dust shield for use in connection with a warm air register, said shield comprising 'a dust pad, wing plates at the ends thereof, a bar connecting said wing plates, and a coil spring connecting the bar and register.

In witness whereof, I hereunto subscribe my name to this specification.

ROBERT C. BENDER. 

